While naloxone - a drug that's gaining nationwide visibility for its ability to reverse opioid overdoses - is federally classified as a prescription drug, some states have passed laws that allow pharmacies to sell it without one.

CVS Caremark has pulled cigarettes from its shelves a month ahead of schedule.

In February, CVS, one of the nation's largest drugstore chains, said it would stop selling tobacco products by October, despite the profits they brought the company. Now cigarettes in the company's stores are history.

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